HDMI 2.1?

[FrankCostanza]

I just purchased a LG C9 OLED TV with a 120Hz refresh rate. I was looking to upgrade my audio components starting with a receiver. I currently have a 20 year old Yamaha that I just use for stereo sound 2.1. All the receivers that I’ve found only support a 60Hz refresh rate. From what I understand I’d have to wait for the receivers to support HDMI 2.1 to have the 120Hz refresh rate. I guess I’m asking if it is worth upgrading a receiver now and limiting some of my TVs performance or wait until HDMI 2.1 comes out. I eventually will be building a 5.2 system and the Denon x3500h is tempting to upgrade now. Am I understanding refresh rates the right way?

 

[lovinthehd]

What 120hz content are you going to need it for?

ps Maybe this would help https://www.cnet.com/news/hdmi-2-1-what-you-need-to-know/

 

[BMXTRIX]

Your TV doesn't accept a 4K/120hz signal, as that's well beyond the bandwidth which HDMI 2.0 supports. Your TV likely doesn't even have a HDMI 2.1 input, per-se. It is more likely that the input is called HDMI 2.1 because it supports eARC, which is nice.

If you have a source which can deliver a acceptable 120hz source to the TV, and the TV actually can accept it, then I would imagine that the source is 1080p/120hz, which some PCs can spit out. If so, then I would hook it up directly to the TV and use eARC if the receiver really can't support it.

You will want a receiver which also supports eARC.

From my brief reading, the LG C9 series does NOT accept a 120hz signal. It only can convert 60hz signals to 120hz internally. This is the most common practice in the industry and why I wasn't sure about things. So, you can feed the display 24hz or 60hz and it can convert it to 120hz. But, you can't actually feed it 120hz according to what I read.

LG C9 OLED Review (OLED55C9PUA, OLED65C9PUA, OLED77C9PUA)

The LG C9 OLED is an excellent TV. Like all OLED TVs, it delivers outstanding dark room performance, thanks to the perfect inky blacks and perfect black uniformi...

www.rtings.com

 

[Grandzoltar]

My tv and avr are earc equipped. Earc is part of the hdmi 2.1 criteria but hdmi 2.1 involves more things like 48 gbps of which there is no content supporting that. Your lg c9 is one of the first hdmi 2.1 TVs along with the Samsung q900r for more 2.1 TVs go to that rtings link they have tables with filters you can select which criteria you want like refresh rate hdmi 2.1 etc then sort the table.

Now the Earc I notice a difference in audio from video streaming services especially on Netflix. If you can wait 6 months then wait for 2.1 AVR’s to come out in the meantime buy a feature packed cheaper one with earc to hold you over.

The only TVs with 4K @120hz naitive are the Samsung q900r and q90r according to the site

 

[snakeeyes]

I would recommend to wait for HDMI 2.1 AVRs only if you plan on purchasing an 8k capable display over 80in.

I’m unclear on the 120 content on 4K unless it’s for future gaming platforms?

 

[AcuDefTechGuy]

The upcoming Yamaha AVRs will all have HDMI 2.1.

Yamaha's first HDMI 2.1 receivers will also support ALLM, QMS & VRR

Yamaha's 2020 line-up of receivers will be one of the first to feature HDMI 2.1

www.flatpanelshd.com